Problem1969--简单的求和

1969: 简单的求和

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 3  Solved: 1
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Description

Input

Output

Sample Input Copy 

3 2
0 1 1
1 2 3
1 1 1
3

Sample Output Copy 

12

HINT

Source/Category

gyj 
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